EP1726062B1 - Fahrzeug-glasanbringungsantenne und system - Google Patents

Fahrzeug-glasanbringungsantenne und system Download PDF

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Publication number
EP1726062B1
EP1726062B1 EP05732561A EP05732561A EP1726062B1 EP 1726062 B1 EP1726062 B1 EP 1726062B1 EP 05732561 A EP05732561 A EP 05732561A EP 05732561 A EP05732561 A EP 05732561A EP 1726062 B1 EP1726062 B1 EP 1726062B1
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EP
European Patent Office
Prior art keywords
antenna system
antenna
top metallization
layer
windshield glass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05732561A
Other languages
English (en)
French (fr)
Other versions
EP1726062A4 (de
EP1726062A2 (de
Inventor
Korkut Yegin
Daniel G. Morris
Randall J. Snoeyink
William R. Livengood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP08163677A priority Critical patent/EP2009734A1/de
Publication of EP1726062A2 publication Critical patent/EP1726062A2/de
Publication of EP1726062A4 publication Critical patent/EP1726062A4/de
Application granted granted Critical
Publication of EP1726062B1 publication Critical patent/EP1726062B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H01Q1/1285—Supports; Mounting means for mounting on windscreens with capacitive feeding through the windscreen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0435—Vehicle body mounted circuits, e.g. transceiver or antenna fixed to central console, door, roof, mirror or fender
    • B60C23/0444—Antenna structures, control or arrangements thereof, e.g. for directional antennas, diversity antenna, antenna multiplexing or antennas integrated in fenders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave

Definitions

  • the present invention generally relates to vehicular glass-mount antennas having improved radiation characteristics.
  • AM/FM amplitude modulation / frequency modulation
  • SDARS satellite digital audio radio systems
  • GPS global positioning system
  • DAB digital audio broadcast
  • PCS/AMPS dual-band personal communication systems digital/analog mobile phone service
  • RKE Remote Keyless Entry
  • Tire Pressure Monitoring System antennas, and other wireless systems.
  • patch antennas are employed for reception and transmission of GPS [i.e. right-hand-circular-polarization (RHCP) waves] and SDARS [i.e. left-hand-circular-polarization (LHCP) waves].
  • Patch antennas may be considered to be a 'single element' antenna that incorporates performance characteristics of 'dual element' antennas that essentially receives terrestrial and satellite signals.
  • SDARS for example, offer digital radio service covering a large geographic area, such as North America.
  • Satellite-based digital audio radio services generally employ either geo-stationary orbit satellites or highly elliptical orbit satellites that receive uplinked programming, which, in turn, is re-broadcasted directly to digital radios in vehicles on the ground that subscribe to the service.
  • SDARS also use terrestrial repeater networks via ground-based towers using different modulation and transmission techniques in urban areas to supplement the availability of satellite broadcasting service by terrestrially broadcasting the same information.
  • the reception of signals from ground-based broadcast stations is termed as terrestrial coverage.
  • an SDARS antenna is required to have satellite and terrestrial coverage with reception quality determined by the service providers, and each vehicle subscribing to the digital service generally includes a digital radio having a receiver and one or more antennas for receiving the digital broadcast.
  • GPS antennas on the other hand, have a broad hemispherical coverage with a maximum antenna gain at the zenith (i.e. hemispherical coverage includes signals from 0° elevation at the earth's surface to signals from 90° elevation up at the sky).
  • Emergency systems that utilize GPS such as OnStarTM, tend to have more stringent antenna specifications.
  • SDARS patch antennas are operated at higher frequency bands and presently track only two satellites at a time.
  • the mounting location for SDARS patch antennas makes antenna reception a sensitive issue with respect to the position of the antenna on a vehicle.
  • SDARS patch antennas are typically mounted exterior to the vehicle, usually on the roof, or alternatively, inside the vehicle in a hidden location, for example, within an instrument panel.
  • such as cellular telephone mast antennas have been located on the exterior surface of automotive glass and the received signals are electromagnetically coupled through the glass to the vehicle's receiver.
  • Electromagnetically coupling such antennas in an SDARS application, without an external amplifier, is very difficult due to inherent loss and distorted radiation patterns associated with front windshield glass composition, which includes an intermediate plastic layer sandwiched between inner and outer glass layers. Additionally, external antennas are highly visible, prone to being damaged, and not aesthetically pleasing.
  • EP-A-0590928 discloses an antenna system in acccordance with the preamble of claim 1.
  • Figure 1 illustrates a general side view of the vehicle glass mount antenna system
  • Figure 2 illustrates a passenger compartment view of a front windshield glass mount antenna according to one embodiment of the invention
  • Figure 3 illustrates a passenger compartment view of a rear glass mount antenna
  • Figure 4A illustrates a cross-sectional view of the front windshield glass mount antenna according to one embodiment of the invention
  • Figure 4B illustrates a top view of an embodiment of a first element of the front windshield glass mount antenna according to Figure 4A ;
  • Figure 4C illustrates a top view of an embodiment of a second element of the front windshield glass mount antenna according to Figure 4A ;
  • Figure 4D illustrates a top view of another embodiment of a first element of the front windshield glass mount antenna according to Figure 4A ;
  • Figure 4E illustrates a top view of another embodiment of a second element of the front windshield glass mount antenna according to Figure 4A ;
  • Figure 5A illustrates a cross-sectional view of the rear windshield glass mount antenna
  • Figure 5B illustrates a schematic top view of the rear windshield glass mount antenna according to Figure 5A ;
  • Figure 5C illustrates another schematic top view of the rear windshield glass mount antenna according to Figure 5A ;
  • Figure 6A illustrates a cross-sectional view of a rear-view mirror assembly and the front windshield glass mount antenna according to one embodiment of the invention
  • Figure 6B illustrates a cross-sectional view of a rear-view mirror assembly and the front windshield glass mount antenna according to another embodiment of the invention
  • Figure 7A illustrates a cross-sectional view of the front windshield glass mount antenna according to another embodiment of the invention.
  • Figure 7B illustrates a cross-sectional view of the front windshield glass mount antenna according to another embodiment of the invention.
  • Figure 8A illustrates a cross-sectional view of the front windshield glass mount antenna according to another embodiment of the invention.
  • Figure 8B illustrates a cross-sectional view of the front windshield glass mount antenna according to another embodiment of the invention.
  • a vehicle includes a front windshield glass 12a and rear windshield glass 12b each including antenna units 14a, 14b, respectively.
  • the antenna unit 14a is shown proximate a rear-view mirror assembly 13 at a top portion 15 of the front windshield glass 12a that meets a headliner (not shown). The location of headliner provides the shortest path to route and hide wires 16 extending from the antenna unit 14a and rear-view mirror assembly 13.
  • the antenna unit 14a When implemented near the top portion 15, the antenna unit 14a should not come into direct contact with the vehicle body so as to ensure that the antenna unit 14a is not shorted out.
  • the antenna unit 14b is located near a corner 18 of the rear windshield glass 12b such that defroster wires 19 are routed about the mounting location of the antenna unit 14b.
  • the antenna unit 14b is shown near the corner 18, the antenna unit 14b can be located at any desirable location on the rear windshield glass, but more preferably, in a location that is less visible to the passengers and driver.
  • the antenna unit 14b may be located between the rear windshield glass 12b and a rear brake light housing 21 so as to completely hide the antenna unit 14b from the passengers and driver.
  • the front windshield glass 12a ( Figure 4A ) includes a layer of plastic film 11c that is sandwiched between an outer glass layer 11a and an inner glass layer 11b, whereas, conversely, the rear windshield glass 12b ( Figure 5A ) does not comprise an intermediate plastic film layer 11c; but rather a unit of glass defined by a thickness, T. Because the outer layer of glass 11a is exposed to the elements, which may undesirably result in failure and cracking, the inner layer of glass 11b is separated and shielded from the outer glass 11a by the intermediate plastic film layer 11c. Although sufficient in preventing complete physical failure of the front windshield glass 12a as described above, the plastic film layer 11c introduces losses and distorted radiation patterns related to antenna performance, which may significantly degrade the electromagnetic coupling characteristics of conventional on-glass antennas related to SDARS applications.
  • the antenna unit 14a which is hereinafter referred to as an aperture coupled, slot-wave antenna 14a, provides a vehicular glass mount patch antenna while also improving electromagnetic coupling performance over conventional front windshield-mount antennas.
  • the aperture coupled, slot-wave antenna 14a is essentially a two-element antenna system such that a radiation element 20a, 20bis electromagnetically coupled through the front windshield glass 12a to an excitation element 22 located on the interior surface of the front windshield glass 12a.
  • the first element of the aperture coupled, slot-wave antenna 14a includes a substantially rectangular top metallization 20a (i.e. the radiation element).
  • a substantially rectangular top metallization 20a i.e. the radiation element.
  • the substantially rectangular top metallization 20a is linearly polarized (i.e. to receive terrestrial signals) and may include any desirable conducting material, such as, for example, a silver conducting film.
  • the top metallization 20a may include an optically transparent conducting film comprising, for example, indium tin oxide, to reduce the appearance of the aperture-couple slot-wave antenna 14a located about the front windshield glass 12a.
  • the second element of the aperture coupled, slot-wave antenna 14a includes a bottom portion 22 (i.e. the excitation element) that is electromagnetically coupled through at least one layer 11a-11c of the three-layered windshield glass 12a.
  • the bottom portion 22 includes a substantially rectangular metal layer 24 and low noise amplifier (LNA) circuit 26.
  • the metal layer 24 is further defined to include an absence of material in the form of a substantially off-centered rectangular slot 28a, according to an embodiment.
  • the slot 28a in the metal layer 24 is excited by a microstrip line 30 (shown in phantom in Figure 4C ) that is carried by a dielectric material and located adjacent the LNA circuit 26.
  • a microstrip line 30 shown in phantom in Figure 4C
  • circular polarization is built into the antenna 14a as a result of the combination of the slot 28a and microstrip line 30, which excites electromagnetic waves received by the top metallization 20a.
  • the circular polarization may be achieved by providing a substantially off-centered cross-aperture 28b in the metal layer 24b in place of the substantially rectangular slot 28a. If a cross-aperture 28b is included, the top metallization 20b is a chamfered-edge patch element 20b. In yet another alternative embodiment, circular polarization may be built into the top metallization 20a by moving the slot 28a and microstrip line 30 into the top metallization 20a.
  • FIG. 6A a first implementation of the aperture-coupled slot-wave antenna 14a on the front windshield glass 1-2a is shown according to one embodiment of the invention.
  • the aperture-coupled slot-wave antenna 14a is shown in a generally similar configuration as that in Figure 4A except that a radome 32 is located over the top metallization 20a, 20b so as to protect the top metallization 20a, 20b from the elements.
  • the radome 32 is a thin, plastic element that has a low dielectric constant, which, as a result, appears transparent to electromagnetic waves received by the top metallization 20a, 20b.
  • the bottom portion 22 of the slotted patch antenna array 14a is located on the passenger-compartment interior surface 23 of the glass layer 11b near an adjustment arm 25 of the rear-view mirror assembly 13.
  • the bottom portion 22 may be affixed to the inner glass layer 11b by an adhesive and covered by a plastic closeout (not shown). As a result, the bottom portion 22 may be hidden by positioning the rear-view mirror assembly 13 proximate the bottom portion 22.
  • the rear-view mirror assembly 13 may include a bezeled portion 27 located about the adjustment arm 25 that provides an adequate volume for housing the bottom portion 22.
  • the radome 32 covers the top metallization 20a, 20b.
  • the bezel 27 performs the dual function of completely hiding the bottom portion 22, but may also provide a routing of wires 16 from the bottom portion 22 with other wires 16 associated with and extending from the rear-view mirror assembly in a tube 29 to the headliner.
  • another embodiment of the antenna system 10a includes bezeled portions, illustrated generally at 31 and 33, in the intermediate plastic film layer 11c.
  • the bezeled portion 31 is located adjacent to the outer glass layer 11a, and conversely as shown in Figure 7B , the bezeled portion 33 is located adjacent the inner glass layer 11b.
  • the glass layers 11a, 11b may each include-bezeled portion, which are illustrated generally at 35 and 37.
  • the bezeled portion 35 is located in the inner glass layer 11b adjacent the intermediate plastic film layer 11c, and conversely as shown in Figure 8B , the bezeled portion 37 is located in the outer glass layer 11a adjacent the intermediate plastic film layer 11c.
  • the alternative embodiments illustrated in Figures 7A-8B function in eliminating the radome 32 because the top metallization 20a, 20b is protected from the elements by integrating the top metallization 20a, 20b within any one of the layers 11a-11c of the front windshield glass 12a. Additionally, the alternate embodiments illustrated in Figures 7A-8B locates the top metallization 20a, 20b closer to the bottom portion 22 to reduce the distance that the received signal has to travel via the electromagnetic coupling between the front windshield glass 12a.
  • top metallization 20a,20b may include a reduced thickness such that the top metallization 20a, 20b is sandwiched between any one of the layers 11a-11c without including a bezeled portion 31, 33, 35, 37.
  • top metallization 20a, 20b is sandwiched between the layers 11a-11c without the bezeled portion 31, 33, 35, 37
  • the material comprising top metallization 20a, 20b and/or the layers 11a-11c may have to be altered so as to compensate for material expansion considerations.
  • the alternate embodiments illustrated in Figures 7A-8B do not show the combination of a bezel 31, 33, 3.5, 37 used in conjunction with the mounting of the bottom portion 22 within the adjustment arm 25 of the rear-view mirror assembly 13, any one of the illustrated bezels 31, 33, 35, 37 may be used in combination with the location of the bottom portion 22 within the adjustment arm 25 as shown in Figure 6B .
  • the antenna unit 14b which is hereinafter referred to as an antenna array 14b, illustrates a vehicular glass mount patch antenna.
  • the antenna array 14b includes a 90-degree phase shift circuit 34e coupled to two patch elements 34a, 34b ( Figure 5B ), or, alternatively, four patch elements 34a-34d ( Figure 5C ), adjacent the interior surface 39 of the rear windshield glass 12b.
  • a dielectric layer 38 and a bottom metal layer 36 are disposed below the patch antenna elements 34a-34d and phase shift circuit 34e.
  • FIGS. 5B and 5C are essentially high-gain antennas where each antenna element 34a-34d are spatially orientated by 90-degees with respect to each other and fed through a phase network so as to provide better axial ratio and more radiation to compensate the inherent losses due to the dielectric constant of the rear windshield glass 12b.
  • the antenna elements 34a-34d include symmetrically cut corners 40 to create left-hand circular polarization for the antenna array 14b, and, by including the phase shift circuit 34e, the phase difference between the antenna elements 34a-34d may be 0°, 90°, 180°, or 270°. Alternatively, if the opposing corners 42 were to be cut, the antenna array 14b would be a right-hand circular polarized antenna.
  • the aperture-coupled slot array antenna 14a and the antenna array 14b include optimum designs for implementation on the front and rear windshield glass 12a, 12b, respectively, a highly optimized vehicular diversity antenna configuration may be provided.
  • Table 1 data comparing the average gain of a slot antenna (i.e., antennas shown in Figures 4A-4E ) and a patch antenna ( Figures 5A-5C ) are shown for various elevation angles.
  • Table 1 Elevation Angle Regular Patch Antenna Gain Slot Coupled Antenna Gain (dBic) (dBic) 0° -3.59 -4.21 5° -3.25 -3.75 10° -2.54 -2.98 20° -0.99 -2.14 25° -0.23 -0.66 30° 0.03 -0.79 40° 0.43 0.70 50° 1.27 1.37 60° 1.91 2.50 According to the data presented above, the average antenna gain at every elevation angle of the slot coupled antenna is comparable to that of a regular solid patch antenna mounted interior to the vehicle. Although elevation angles from 0° to 60° has been displayed, slot coupled antenna performance is very good at elevation angles greater than 60° as well.
  • a diversity antenna applications operate on the principle such that two or more antenna units 14a, 14b complement each other to cover the expected satellite signal, S 1 , to increase the probability of reception of the satellite signals, S 1 , when physical obstructions, O, such as tall buildings or trees impede the line of sight (LOS) of at least one of the antenna units 14a, 14b.
  • the embodiment of the diversity antenna systems also allows reception from terrestrial towers using either, or both antennas 14a, 14b to overcome signal blockage or fading.
  • the aperture-coupled slot array antenna 14a and the antenna array 14b are inclined as a result of being positioned on the front and rear windshield glass 12a, 12b, terrestrial signal reception, S 2 , of both antenna systems 10a, 10b is improved due to the tilt angle of the front and rear windshield glass 12a, 12b. Additionally, because the apeiture-coupled slot array antenna 14a and the antenna array 14b are not located inside the vehicle, such as, for example, behind an instrument panel, signal radiation patterns do not have to contend with lossy vehicular material.

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  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Mechanical Engineering (AREA)
  • Computer Security & Cryptography (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Details Of Aerials (AREA)
  • Radio Transmission System (AREA)
  • Support Of Aerials (AREA)

Claims (14)

  1. Antennensystem (10a), das aufweist:
    ein Windschutzscheibenglas (12a) eines Fahrzeugs (V), wobei das Windschutzscheibenglas eine Schicht aus einem Kunststofffilm (11c) umfasst, der sich zwischen einer äußeren Glasschicht (11a) und einer inneren Glasschicht (11b) befindet; und
    eine Antenneneinheit (14a), die ein ausstrahlendes Element (20a, 20b) umfasst, das elektromagnetisch verbunden ist mit einem Anregungselement (22) durch zumindest eine der Windschutzscheibenglasschichten,
    wobei das ausstrahlende Element (20a, 20b) mit dem Windschutzscheibenglas (12a) verbunden ist, und
    wobei das Anregungselement (22) eine im Wesentlichen rechteckige Metallschicht (24) umfasst und an einer inneren Oberfläche (23) des Windschutzscheibenglases (12a) im Innenraum positioniert ist; dadurch gekennzeichnet, dass
    das ausstrahlende Element (20a, 20b) eine obere Metallisierung umfasst, die eine linear polarisierte im Wesentlichen rechteckige Metallisierung aufweist; dass
    das Anregungselement (22) eine "rauscharmer Verstärker (LNA - low noise amplifier)"-Schaltung (26) umfasst; und dass
    die Metallschicht (24) weiter einen im Wesentlichen nicht-mittigen rechteckigen Schlitz (28a, 28b) aufweist, der durch eine Mikrostreifenleitung (30) angeregt wird, die sich angrenzend an die LNA-Schaltung (26) befindet.
  2. Antennensystem (10a) gemäß Anspruch 1, wobei die Mikrostreifenleitung (30) den Schlitz (28a, 28b) anregt, um eine zirkular polarisierte Antenne zu erzeugen, und wobei die Mikrostreifenleitung (30) durch ein dielektrisches Material getragen wird.
  3. Antennensystem (10a) gemäß Anspruch 2, wobei der Schlitz (28a) eine im Wesentlichen nicht-mittige rechteckige Öffnung aufweist.
  4. Antennensystem (10a) gemäß Anspruch 2, wobei der Schlitz (28b) eine im Wesentlichen nicht-mittige kreuzförmige Öffnung aufweist.
  5. Antennensystem (10a) gemäß Anspruch 1, wobei die obere Metallisierung (20a, 20b) ein leitendes Element aufweist.
  6. Antennensystem (10a) gemäß Anspruch 1, wobei die obere Metallisierung (20a, 20b) einen leitenden Silber-Film aufweist.
  7. Antennensystem (10a) gemäß Anspruch 1, wobei die obere Metallisierung (20a, 20b) einen optisch transparenten leitenden Indium-ZinnOxid-Film aufweist.
  8. Antennensystem (10a) gemäß Anspruch 1, wobei sich die obere Metallisierung (20a, 20b) auf einer äußeren Oberfläche der äußeren Glasschicht (11a) befindet, wobei ein Radom die obere Metallisierung (20a, 20b) abdeckt.
  9. Antennensystem (10a) gemäß Anspruch 1, wobei sich die obere Metallisierung (20a, 20b) zwischen der äußeren Glasschicht (11a) und der Kunststoffschicht (11c) befindet.
  10. Antennensystem (10a) gemäß Anspruch 9, wobei sich die obere Metallisierung (20a, 20b) in einem umfassten Teil (31) des Kunststofffilms (11c) befindet.
  11. Antennensystem (10a) gemäß Anspruch 9, wobei sich die obere Metallisierung (20a, 20b) in einem umfassten Teil (37) der äußeren Glasschicht (11a) befindet.
  12. Antennensystem (10a) gemäß Anspruch 1, wobei sich die obere Metallisierung (20a, 20b) zwischen der inneren Glasschicht (11b) und der Kunststoffschicht (11c) befindet.
  13. Antennensystem (10a) gemäß Anspruch 12, wobei sich die obere Metallisierung (20a, 20b) in einem umfassten Teil (33) des Kunststofffilms (11c) befindet.
  14. Antennensystem (10a) gemäß Anspruch 12, wobei sich die obere Metallisierung (20a, 20b) in einem umfassten Teil (35) der inneren Glasschicht (11b) befindet.
EP05732561A 2004-03-05 2005-02-17 Fahrzeug-glasanbringungsantenne und system Not-in-force EP1726062B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08163677A EP2009734A1 (de) 2004-03-05 2005-02-17 Auf dem Fahrzeugglas befestigte Antenne und System

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US55028004P 2004-03-05 2004-03-05
US11/058,647 US7675471B2 (en) 2004-03-05 2005-02-15 Vehicular glass-mount antenna and system
PCT/US2005/004942 WO2005091827A2 (en) 2004-03-05 2005-02-17 Vehicular glass-mount antenna and system

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP08163677A Division EP2009734A1 (de) 2004-03-05 2005-02-17 Auf dem Fahrzeugglas befestigte Antenne und System
EP08163677.1 Division-Into 2008-09-04

Publications (3)

Publication Number Publication Date
EP1726062A2 EP1726062A2 (de) 2006-11-29
EP1726062A4 EP1726062A4 (de) 2008-01-23
EP1726062B1 true EP1726062B1 (de) 2011-10-26

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EP08163677A Withdrawn EP2009734A1 (de) 2004-03-05 2005-02-17 Auf dem Fahrzeugglas befestigte Antenne und System
EP05732561A Not-in-force EP1726062B1 (de) 2004-03-05 2005-02-17 Fahrzeug-glasanbringungsantenne und system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP08163677A Withdrawn EP2009734A1 (de) 2004-03-05 2005-02-17 Auf dem Fahrzeugglas befestigte Antenne und System

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US (1) US7675471B2 (de)
EP (2) EP2009734A1 (de)
AT (1) ATE531096T1 (de)
WO (1) WO2005091827A2 (de)

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DE202020005487U1 (de) 2019-04-10 2021-06-10 Saint-Gobain Glass France Fahrzeugscheibe

Also Published As

Publication number Publication date
EP2009734A1 (de) 2008-12-31
EP1726062A4 (de) 2008-01-23
US7675471B2 (en) 2010-03-09
WO2005091827A2 (en) 2005-10-06
US20050195115A1 (en) 2005-09-08
EP1726062A2 (de) 2006-11-29
ATE531096T1 (de) 2011-11-15
WO2005091827A3 (en) 2006-08-31

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